Enum MetadataColumn 

pub enum MetadataColumn {
    Exchange,
    RoutingKey,
    Redelivered,
    DeliveryCount,
    MessageId,
    CorrelationId,
    Timestamp,
    ContentType,
    ContentEncoding,
    DeliveryMode,
    Priority,
    Expiration,
    ReplyTo,
    Type,
    UserId,
    AppId,
    Headers,
}

One selectable metadata column, in canonical output order.

Variants

Exchange

_exchange: the exchange the message was published to (empty for the default exchange).

RoutingKey

_routing_key: the publish routing key.

Redelivered

_redelivered: the broker’s redelivery flag.

DeliveryCount

_delivery_count: the x-delivery-count header quorum queues maintain, else NULL.

MessageId

_message_id: the message-id property.

CorrelationId

_correlation_id: the correlation-id property.

Timestamp

_timestamp: the timestamp property (whole seconds) as milliseconds since the epoch.

ContentType

_content_type: the content-type property.

ContentEncoding

_content_encoding: the content-encoding property.

DeliveryMode

_delivery_mode: the delivery-mode property (1 transient, 2 persistent).

Priority

_priority: the priority property.

Expiration

_expiration: the expiration property, the per-message TTL in milliseconds as text.

ReplyTo

_reply_to: the reply-to property.

Type

_type: the type property.

UserId

_user_id: the broker-validated user-id property.

AppId

_app_id: the app-id property.

Headers

_headers: every header entry in table order with its value rendered as bytes.

Implementations

impl MetadataColumn

pub const fn option_name(self) -> &'static str

Option name used in metadata.columns.

Trait Implementations

impl Clone for MetadataColumn

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for MetadataColumn

impl Debug for MetadataColumn

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for MetadataColumn

impl Hash for MetadataColumn

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for MetadataColumn

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for MetadataColumn

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for MetadataColumn

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for MetadataColumn